Turner Turbidity Plus Manuel utilisateur

User’s Manual

February 28, 2020

P/N 998-2187

Revision G

TURNER DESIGNS

1995 N. 1st Street

San Jose, CA 95112

Phone: (408) 749-0994

FAX: (408) 749-0998

Turbidity Plus Sensor

998-2187 Rev. G Page 2

Table of Contents

Introduction

1.1

Description

Inspection and Setup

2.1

Housing Configurations

2.2

Optional Accessories

2.3

Functional Test for Turbidity Plus with connector with P/N 2200-170

2.4

Functional test for Turbidity Plus with connector with Fondriest

Cable

2.5

Functional test of the wiper for the Turbidity Plus with connector

P/N 2200-170

2.6

Functional test of the wiper for the Turbidity Plus with connector

with Fondriest Cable

Calibration

3.1

Direct Concentration Calibration for Turbidity Plus

Integration

4.1

To take measurements

4.2

To trigger wiper

Maintenance and Warranty

5.1

Maintenance

5.1.1

Rinsing

5.1.2

Care for the bulkhead connector

5.1.3

Cleaning the Optics

5.2

Warranty Terms

5.3

Warranty Service

5.4

Out of Warranty Service

Appendices

Specifications

Recommended Measurement Practices

Pigtail Cable and Connector Information

Functional Test for Turbidity Plus with no Connector

Turbidity Plus Sensor

998-2187 Rev. G Page 3

WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)

DIRECTIVE

Turner Designs is in the business of designing and selling products that benefit the

well-being of our environment. Accordingly, we are concerned with preserving the

surroundings wherever our instruments are used and happy to work with customers

by complying with the WEEE Directive to reduce the environmental impact resulting

from the use of our products.

WEEE Return Process:

To arrange the return of an end-of-life product, proceed as follows:

If you purchased your instrument through a Turner Designs Distributor please

contact your local representative. They will instruct you where to return the end-

of-life product.

If you purchased your instrument directly from Turner Designs please contact

Turner Designs Customer Service

By Phone: 1-408-212-4041 or Toll Free: (877) 316.8049

By Email: Customer Service at support@turnerdesigns.com

Turner Designs will provide a WEEE RMA Number, a Shipping Account

Number, and a Ship to Address. Package and ship the product back to Turner

Designs.

The product will be dealt with per Turner Designs’ end-of-life recycling program in

an environmentally friendly way.

Turbidity Plus Sensor

998-2187 Rev. G Page 4

1. Introduction

1.1 Description

Turbidity PlusTM is an accurate single-channel turbidity sensor with an

integrated, user-controlled wiper motor. It is designed for integration with

multiparameter systems and dataloggers from which it receives power and wiper

motor triggers at user-defined intervals. Turbidity Plus is available in two linear

ranges up to 500 or 3,000 NTU with minimum detection limits of 0.05 or 0.5 NTU

respectively. It delivers a voltage response proportional to the turbidity of the

sample which can be correlated to nephelometric turbidity unit (NTU)

concentrations by calibrating the sensor using AMCO Clear Turbidity Standards.

Deployable to 200 meters, Turbidity Plus is available in a variety of

configurations to facilitate integration.

Turbidity Plus Sensor

998-2187 Rev. G Page 5

2. Inspection and Setup

2.1 The Turbidity Plus Sensor is available in the following configurations:

Turbidity Plus Sensor with Integrated Wiper P/N 2180-000

oFully configured with connector and complete wiper assembly

Turbidity Plus with Integrated Wiper Motor and Wiper Assembly, No

Connector P/N: 2180-000-NC.

Turbidity Plus with Integrated Wiper Motor, No Wiper Assembly, No

Connector P/N: 2180-000-NCW

Turbidity Plus with Integrated Wiper Motor and Wiper Assembly, No Housing

P/N: 2180-000-NH

Turbidity Plus with Integrated Wiper Motor, No Wiper Assembly, No Housing,

P/N: 2180-000-NHW

500 NTU Turbidity Plus with Integrated Wiper P/N 2185-000

oFully configured with connector and complete wiper assembly

Note: The wiper shaft has a flat edge for the application of a set screw to

avoid unwanted movement of the wiper assembly.

2.2 Optional Accessories:

0.6 meter Pigtail Cable with Locking Sleeve P/N 2200-170

Turner Designs does not sell cables longer than 0.6M for the Turbidity

Plus. We recommend the following Fondriest Environmental products.

Fondriest Environmental

2091 Exchange Court

Fairborn, OH 45324

888.426.2151

937.426.2151

https://www.fondriest.com/nexsens-mcil-female-cable-assemblies.htm

P/N MCIL-8-FS-5 5 meter Pigtail Cable with Locking Sleeve

P/N MCIL-8-FS-10 10 meter Pigtail Cable with Locking Sleeve

Note: Fondriest cables have an orange outer shielding, consult wiring

instructions Figure 2 for pinout.

Turbidity Plus Sensor

998-2187 Rev. G Page 6

Note: Turbidity Plus without connector refer to Appendix D.

2.3 Functional test for Turbidity Plus with connector with Pigtail P/N 2200-170.

To perform a functional check on Turbidity Plus, connect the Pigtail

P/N 2200-170 colored wires to the power supply and multi-meter as shown in

Figure 1 below.

Additional Equipment required for functional tests:

DC Power Supply: 3-15 VDC, >100 mA

Multi-meter to read: 0 –5 VDC

Note: Supply voltages greater than 9 VDC will result in damage to the

sensor.

Figure 1

Turbidity Plus pins Pigtail P/N 2200-170

Turbidity Plus Sensor

998-2187 Rev. G Page 7

2.4 Functional test for Turbidity Plus with connector with Fondriest Cable P/N

MCIL-8-FS-5/10 5 or 10 meter Pigtail Cable with Locking Sleeve.

To perform a functional check on Turbidity Plus, connect the Fondriest Cable

colored wires to the power supply and multi-meter as shown in Figure 2 below.

Additional Equipment required for functional tests:

DC Power Supply: 3-15 VDC, >100 mA

Multi-meter to read: 0 –5 VDC

Note: Supply voltages greater than 9 VDC will result in damage to the

sensor.

Figure 2.

12.00 .015

+ -

DC Power Supply

PSU Positive Connection

Red (3)

Supply Ground

0 VDC Brown (4)

3.52

Multimeter

10 VDC

Signal Output

“+” Yellow (5)

Analog Ground

“-” White (6)

Orange (1) Black (2)

No Connection

Turbidity Plus Pigtail Cable

Home Signal

Blue (7)

Wiper Trigger

Green (8)

Orange Cable

Wire Color Pin Function

Orange 1 N/A

Black 2 N/A

Red 3 Supply Voltage 3-15 VDC

Brown 4 Supply Ground 0 VDC

Yellow 5 Signal Out “+”, 0-5 VDC

White 6 Signal Ground “-”, 0-5 VDC

Blue 7 Home Signal

Green 8 Wiper Trigger. 3.2 VDC

Turbidity Plus pins

Orange

cable holes

Turbidity Plus Sensor

998-2187 Rev. G Page 8

With Turbidity Plus connected as shown in Figure 1 and 2 perform functional

tests to answer the following questions:

1. Is there voltage output?

The multi-meter should be reading some voltage >0 VDC

2. Does the voltage output change?

Move the palm of your hand towards the optical head and check if the

voltage output increases

Note: A visual test of the LED for Turbidity Plus is not possible because it is

IR, which is not visible.

2.5 Functional test of the wiper for Turbidity Plus with connector with P/N 2200-

170.

To perform a functional check on the wiper, connect the Pigtail colored wires to

the power supply and multi-meter following the steps below, shown in Figure 3.

1. Disconnect the blue wire from the meter and connect the yellow wire in its

place. It should read about 0 volts.

2. Briefly touch the orange wire to the power supply ground.

3. The wiper should start rotating and the meter should read about 3.2 volts

until the wiper returns to its home position.

Figure 3.

Note: The sensor has built in protection if the wiper becomes blocked and

cannot move. In this case the wipe will stop and will try to return to the home

position the next time it is triggered.

Warning: Do not move the wiper by hand. This can cause permanent damage

to the sensor.

12.00 .015

+ -

DC Power Supply

PSU PositiveConnection

(Red)

Supply Ground

0 VDC (Green)

3.20

Multimeter

10 VDC

Home Signal

(Yellow)

Analog Ground

“-” (Brown)

Black White

No Connection

Turbidity Plus Pigtail Cable

Output Signal

“+” (Blue)

Wiper Trigger

(Orange)

Turbidity Plus Sensor

998-2187 Rev. G Page 9

2.6 Functional test of the wiper for Turbidity Plus with connector Fondriest

Cable.

To perform a functional check on the wiper, connect the Pigtail colored wires to

the power supply and multi-meter following the steps below, shown in Figure 4.

4. Disconnect the yellow wire from the meter and connect the blue wire in its

place. It should read about 0 volts.

5. Briefly touch the green wire to the power supply ground.

6. The wiper should start rotating and the meter should read about 3.2 volts

until the wiper returns to its home position.

Figure 4.

Note: The sensor has built in protection if the wiper becomes blocked and

cannot move. In this case the wipe will stop and will try to return to the home

position the next time it is triggered.

Warning: Do not move the wiper by hand. This can cause permanent damage

to the sensor.

12.00 .015

+ -

DC Power Supply

PSU Positive Connection

Red (3)

Supply Ground

0 VDC Brown (4)

3.20

Multimeter

10 VDC

Home Signal

Blue (5)

Analog Ground

“-” White (6)

Orange (1) Black (2)

No Connection

Turbidity Plus Pigtail Cable

Output Signal

“+” Yellow (5)

Wiper Trigger

Green (8)

Turbidity Plus Sensor

998-2187 Rev. G Page 10

3. Calibration

Note: To make accurate and repeatable measurements it is important to

keep the sensor clean; see Section 5.1 for information on cleaning your

sensor.Refer to Appendix B - Recommended Measurement Practices.

3.1 Direct Concentration Calibration

Calibrating Turbidity Plus is a simple process that requires calibration standards

to create a correlation factor which is used to convert raw voltage data to NTU

concentrations.

Turner Designs recommends Amco Clear Turbidity Standards. They are non-

toxic safe solutions consisting mainly of deionized water that come prepared in a

broad range of concentrations and have a shelf life guaranteed for one year.

These standards are available from GFS Chemicals under part numbers 8506

(10 NTU), 8507 (100 NTU), 8620 (1000 NTU) and 8621 (3000 NTU). Follow

instructions below to establish a correlation between the standard’s

concentration and the sensor’s voltage response. Use the equation in step 6 to

calculate NTU concentrations.

1) Connect Turbidity Plus to a power source and multimeter; see figure 1 for

details.

2) Fill a darkened beaker with blank sample and use Turbidity Plus to measure

the voltage of the blank.

Note: A good blank to use for this application is ultra-pure or

deionized water.

3) Remove Turbidity Plus from the blank, pour out the blank sample, and fill the

same darkened beaker with a standard solution of known concentration.

4) Measure the voltage response of the standard solution.

5) Use the following equation to create a correlation factor:

[(CStd)/(VoltsStd - VoltsBlank)] = Correlation Factor

CStd = Concentration value of standard used for calibration

VoltsStd = Voltage reading from standard concentration

VoltsBlank = Voltage reading from blank

6) Use the following equation to calculate concentration from measured voltage

response:

CSample = (Correlation Factor) * (VoltsSample –VoltsBlank)

Csample = Concentration of sample

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